//
//  MTUserAccount.swift
//  MTWeiBo
//
//  Created by user on 2017/7/25.
//  Copyright © 2017年 itcast. All rights reserved.
//

import UIKit

//归档和接档对象的路径
let userAccountPath = (NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).last! as NSString).appendingPathComponent("userAccount.archive")


//用户账号模型
class MTUserAccount: NSObject, NSCoding {

    //访问令牌
    var access_token: String?
    //访问令牌过期秒数
    var expires_in: Int = 0 {
        didSet{
            //  过期时间 = 当前时间 + 过期秒数
            //  typealias: 表示可以给类型起别名
            expiresDate = Date().addingTimeInterval(TimeInterval(expires_in))
        }
    }
    //用户对象
    var expiresDate: Date?
    //用户id
    var uid: Int64 = 0
    
    //  用户名
    var name: String?
    //  用户头像
    var avatar_large: String?
    

    
    //kvc构造函数
    init(dict: [String: Any]){
        super.init()
        setValuesForKeys(dict)
    }
    
    
    // MARK: -- 归档和接档
    func encode(with aCoder: NSCoder) {
        aCoder.encode(access_token, forKey: "access_token")
        aCoder.encode(expiresDate, forKey: "expiresDate")
        aCoder.encode(uid, forKey: "uid")
        aCoder.encode(name, forKey: "name")
        aCoder.encode(avatar_large, forKey: "avatar_large")
        
    }
    
    required init?(coder aDecoder: NSCoder) {
        access_token = aDecoder.decodeObject(forKey: "access_token") as? String
        expiresDate = aDecoder.decodeObject(forKey: "expiresDate") as? Date
        uid = aDecoder.decodeInt64(forKey: "uid")
        name = aDecoder.decodeObject(forKey: "name") as? String
        avatar_large = aDecoder.decodeObject(forKey: "avatar_large") as? String
    }
    
    //保存用户对象
    func saveUserAccount() {
        print(userAccountPath)
        NSKeyedArchiver.archiveRootObject(self, toFile: userAccountPath)
    }
    //读取用户对想
    class func loadUserAccount() -> MTUserAccount? {
        print(userAccountPath)
        let userAccount = NSKeyedUnarchiver.unarchiveObject(withFile: userAccountPath) as? MTUserAccount
        return userAccount
    }
    
    //  防止字段不匹配
    override func setValue(_ value: Any?, forUndefinedKey key: String) {
        //空实现
    }
    
}
